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Scroll toward any point on the cortex, cerebellum or brainstem. The surface opens into a brain-shaped field of cell bodies, then streams progressively finer neurons around your view, so only the cells you are looking at are ever rendered. Cell bodies stay about 20 µm across; dots are a sparse sample of real neuron density, and signal timing is slowed thousands of times for visibility.
A simplified view of interacting networks. Regions work together and in parallel; the animation is not a literal signal trace or a measurement of your brain.